How to adjust the scale on second Y-Axis in cfchart

Hi,

I am using cfchart to show the bar graph and line graph in the same chart . Bar graph uses Y-Axis1 and line chart uses Y-Axis2 . Y-Axis1 represents the numeric value and  Y-Axis2 represents the percentage scale. the scale of Y-Axis1 depends upon the values of the data plotted but the scale of Y-Axis2 i.e for percentage that shoul  be fixed from 0 t0 100% . But as the Y-Axis1 scale adjusts the Y-Axis2 scale is being changed. But i dont want that to happen . The Y-Axis2 scale should be fixed from 0 t0 100 and the Y-Axis1 scale should be adjusted depending on the values . Please suggest a solution to this .

Thanks,

Sriram